Build a working hydraulic arm with this excellent 66-piece kit from Pathfinders' Simple Machine series. Structure is die-cut plywood and the kit includes tubing, (3) syringes and glue. You'll need a ruler and scissors. The finished arm will be approx 13-1/2" tall and will reach out over 16" and rotate 90° on an 8-5/8' x 6-7/8" base. Comes with a 12-page manual and uses water. Beautiful, too. For ages 8+.
Pathfinders
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Category: Science Kits
Format: Experiment (Building)
Publisher: Pathfinders
Date Published: Jun 01, 2012
Language: English
ISBN: 718122199716
SKU: LT-3174
Dimensions: 7.50 x 10.00 x 2.00 (in)
Weight: 20.20 oz